﻿//
// (C) Copyright 2009 Irantha Suwandarathna (iranthas@hotmail.com)
// All rights reserved.
//

/* Copyright (c) 2001-2008, The HSQL Development Group
 * All rights reserved.
 *
 * Redistribution and use _in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions _in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer _in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using EffiProz.Core.Errors;
using EffiProz.Core.Lib;


namespace EffiProz.Core.DataTypes
{
    public sealed class OtherType : SqlType
    {
        static OtherType otherType = new OtherType();

        private OtherType()
            : base(Types.OTHER, Types.OTHER, 0, 0)
        {

        }

        public override int displaySize()
        {
            return precision > int.MaxValue ? int.MaxValue
                                                 : (int)precision;
        }

        public override int getAdoTypeCode()
        {
            return (int)DbType.Object;
        }

        public override String getCSharpClassName()
        {
            return "System.Object";
        }

        public override int getSQLGenericTypeCode()
        {

            // return Types.SQL_UDT;
            return base.typeCode;
        }

      

        public override String getNameString()
        {
            return Tokens.T_OTHER;
        }

        public override String getDefinition()
        {
            return Tokens.T_OTHER;
        }

        public override SqlType getAggregateType(SqlType other)
        {

            if (base.typeCode == other.typeCode)
            {
                return this;
            }

            if (other == SQL_ALL_TYPES)
            {
                return this;
            }

            throw Error.error(ErrorCode.X_42562);
        }

        public override SqlType getCombinedType(SqlType other, int operation)
        {
            return this;
        }

        public override int compare(Session session, Object a, Object b)
        {

            if (a == null)
            {
                return -1;
            }

            if (b == null)
            {
                return 1;
            }

            return 0;
        }

        public override Object convertToTypeLimits(SessionInterface session, Object a)
        {
            return a;
        }
        

        // to review - if conversion is supported, then must be serializable and wappred
        public override Object convertToType(SessionInterface session, Object a,
                                    SqlType otherType)
        {
            Object o = ((OtherData)a).getObject();

            if (o == null)
                return null;

            switch (otherType.typeCode)
            {
                case Types.TINYINT:
                    return SqlType.TINYINT.convertSQLToCSharp(session,o);
                case Types.SQL_SMALLINT:
                    return SqlType.SQL_SMALLINT.convertSQLToCSharp(session, o);
                case Types.SQL_INTEGER:
                    return SqlType.SQL_INTEGER.convertSQLToCSharp(session, o);
                case Types.SQL_BIGINT:
                    return SqlType.SQL_BIGINT.convertSQLToCSharp(session, o);
                case Types.SQL_FLOAT:
                    return SqlType.SQL_DOUBLE.convertSQLToCSharp(session, o);
                case Types.SQL_DOUBLE:
                    return SqlType.SQL_DOUBLE.convertSQLToCSharp(session, o);
                case Types.SQL_TIME:
                    return SqlType.SQL_TIME.convertSQLToCSharp(session, o);
                case Types.SQL_DATE:
                    return SqlType.SQL_DATE.convertSQLToCSharp(session, o);
                case Types.SQL_TIMESTAMP:
                    return SqlType.SQL_TIMESTAMP.convertSQLToCSharp(session, o);
                case Types.SQL_CHAR:
                    return SqlType.SQL_CHAR.convertSQLToCSharp(session, o);
                case Types.SQL_VARCHAR:
                    return SqlType.SQL_VARCHAR.convertSQLToCSharp(session, o);
                case Types.BINARY:
                    return SqlType.SQL_VARCHAR.convertSQLToCSharp(session, o);
                case Types.SQL_BOOLEAN:
                    return SqlType.SQL_BOOLEAN.convertSQLToCSharp(session, o);
            }

            return a;
        }

        public override Object convertToDefaultType(SessionInterface session, Object a)
        {

            if (a.GetType().IsSerializable)
            {
                return a;
            }

            throw Error.error(ErrorCode.X_42561);
        }

        public override String convertToString(Object a)
        {

            if (a == null)
            {
                return null;
            }

            return StringConverter.byteArrayToHexString(
                ((OtherData)a).getBytes());
        }

        public override String convertToSQLString(Object a)
        {

            if (a == null)
            {
                return Tokens.T_NULL;
            }

            return StringConverter.byteArrayToSQLHexString(
                ((OtherData)a).getBytes());
        }

        public override Object convertSQLToCSharp(SessionInterface session, Object a)
        {
            return ((OtherData)a).getObject();
        }

        public override bool canConvertFrom(SqlType otherType)
        {

            if (otherType.typeCode == base.typeCode)
            {
                return true;
            }

            if (otherType.typeCode == Types.SQL_ALL_TYPES)
            {
                return true;
            }

            return false;
        }

        public override bool isObjectType()
        {
            return true;
        }

        public static OtherType getOtherType()
        {
            return otherType;
        }
    }
}
